Rookie RB's Rest of Season

Hey Ballers! Thanks for keeping it spicy. I have Kamara, Carson, Cohen and Foreman in 10 team PPR. Can I trust them rest of season or should I cash in for a stud WR or buy low RB?

I’m always a fan of a 2 for 1 trade when it nets you a better player. Would certainly try to move a couple of these guys for a stud if you can get someone to bite.